for zombie apocalypse Solar charging backpack that can charge your laptop. From Voltaic. This can be your bug out bag. Charge your phone and flashlights and laptop. For daily use, not only in case of any emergency.
for backpacks and climbing gear Tactical Gear Stand 04 by ITS Tactical, can easily be a DIY project. I made one for my kids hockey equipment with more options and it could be torn down and packed into his bag.